OpenGL problem

[babu198649]

hi
i have installed Qt4.3.2 and when i run FrameBufferObject example .it says

"This system does not support OpenGL/framebuffer objects."

while there are OpenGL header files present in the path /usr/local/Trolltech/Qt-4.3.2/include/QtOpenGL

[babu@localhost QtOpenGL]$ pwd
/usr/local/Trolltech/Qt-4.3.2/include/QtOpenGL

[babu@localhost QtOpenGL]$ ls
QGLColormap QGLFormat qgl.h QGLWidget
qglcolormap.h QGLFramebufferObject QGLPixelBuffer QtOpenGL
QGLContext qglframebufferobject.h qglpixelbuffer.h



none of the opengl examples run ,but the QGLFormat::hasOpenGL() returns true.

where did the mistake happened.